CGen Coupon Generator reduces the time-consuming process of creating impedance coupons manually to just a few minutes, adding powerful new features that give coupon generation new levels of control and flexibility.

CGen PCB Coupon Generator is an automatic impedance coupon generator that allows you to create a controlled impedance test coupon from scratch or import finished stacks from Speedstack PCB and Speedstack Si or structures from the Polar Si8000 and Si9000 field solvers.

CGen Si incorporates all the features of CGen PCB and adds insertion loss coupon capability. Please note designs for insertion loss coupons need to be fine tuned to OEM requirements and final adjustment of launch and via structures may still be required. If in any doubt – please check with your design authority.

How
will CGen benefit you?

Computer aided impedance and insertion loss coupon generation

CGen provides a clear and intuitive step by step process for creating your coupon; you simply choose the number of layers, specify board symmetry, identify each layer type and then add impedance structures as required:

Choose the coupon style - the coupon is displayed interactively in the Coupon View pane

The Ruler Tool

Using the Ruler Tool you can check the dimensions and pitches of various elements of the coupon.

CGen generates the appropriate
impedance/insertion loss test coupon containing all the required PCB controlled impedance
transmission line structures, reducing what is normally a time consuming process to minutes.

Importing structures from the Si8000m or Si9000e

CGen is fully compatible with the industry standard Polar Si8000m controlled impedance field solver and the Si9000e frequency dependent, lossy line GHz field solver.

Simply copy and import your finalized structure from Si8000 / Si9000 to add the structure to the selected layer.

Power users familiar with scripting can also import third party XML stack files

Reducing errors in coupon generation

In addition to being time consuming, manual coupon generation may be prone
to errors, especially where complex structures are involved, and
even if you use a scripted solution, not all scripted routes to coupon
generation create the more complex coplanar strip or waveguide structure
types.

Probe connection

One of the most critical areas of coupon design is matching the test probe
to the coupon interconnect. CGen Coupon Generator allows you to
pick from a list of the industry's most frequently used IP probes for
CITS impedance test systems. The interconnect for the chosen probe is
then automatically engineered into the artwork.

How do I use the Coupon Generator?

CGen includes powerful time-saving features

Choice of single-ended and differential-loss coupon styles

Choice of test probe footprints

Easily add, remove or replace layers

Preview edits in real-time

Track changes and highlight errors

Dynamically adjust copper thieving

Automatically engineer test probe interconnects

Create your impedance controlled stackup in CGen itself

Using CGen you can create your coupon from scratch, defining symmetry, the number of layers and layer type and then adding impedance structures as required.:

From within the Si8000m / Si9000e copy the finalized structure into CGen onto the selected layer; you can then manually enter line widths into the structure. Power users familiar with scripting can also import XML data directly.